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Finding the Fourth Proportional to 478,772.75, 660,833.57 and 282,711.04

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Solution

The fourth proportional to 478,772.75, 660,833.57 and 282,711.04 is: 390,216.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,772.75 : 660,833.57 = 282,711.04 : x
  2. Step 2: Convert to fraction form
    478,772.75/660,833.57 = 282,711.04/x
  3. Step 3: Cross multiply
    478,772.75x = 660,833.57 × 282,711.04
  4. Step 4: Simplify right side
    478,772.75x = 186,824,945,841.61
  5. Step 5: Solve for x
    x = 186,824,945,841.61/478,772.75
  6. Step 6: Final answer
    x = 390,216.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.